20626956 has 36 divisors (see below), whose sum is σ = 59589712. Its totient is φ = 5893344.

The previous prime is 20626943. The next prime is 20626961. The reversal of 20626956 is 65962602.

20626956 is a `hidden beast` number, since 20 + 626 + 9 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20626956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40675 + ... + 41178.

Almost surely, 2^20626956 is an apocalyptic number.

It is an amenable number.

20626956 is an abundant number, since it is smaller than the sum of its proper divisors (38962756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20626956 is a wasteful number, since it uses less digits than its factorization.

20626956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81870 (or 81865 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 20626956 is about 4541.6908745532. The cubic root of 20626956 is about 274.2489966661.

The spelling of 20626956 in words is "twenty million, six hundred twenty-six thousand, nine hundred fifty-six".